Experience ultimate security and convenience with our Smart Adjustable Cylinder Bluetooth Doorlock. This cutting-edge lock combines multiple unlocking methods, including fingerprint recognition, numeric code entry, and Bluetooth connectivity through our ENERJSMART app. With the adjustable cylinder, it is suitable for doors with thickness ranging from 35mm to 75mm. njoy seamless access control, advanced security features, and remote management right at your fingertips.
Adjustable Lock Cylinder: Will fit on any door with a thickness of 35-70mm with an industry-standard deadbolt borehole that is 2-1/8" in diameter. Each lock comes with rubber spacers to help create the most secure fit.
4 Ways to use: Fingerprint, Keypad, App via Bluetooth or mechanical keys.
Remote Monitoring: Can monitor on the app remotely, which user used the door and when. Also generate codes when connected to bluetooth to your doorlock, and give them to your visitors.
Sleek Design and Easy Installation: Nice Silver colour body with 304 Stainless Steel + Aluminum + Plastic material. IP55 rated so dont need to worry about weather.Wide Application: Ideal for AirBnB hosts, HMO's, block of flats, offices, shops and for every home

| App |
TTLOCK or Tuya |
| Product Name |
Smart Door Lock Cylinder |
| Material |
Aluminum alloy+stainless steel+brass |
| Power supply mode |
4pcs AAA alkaline batteries |
| IUnlock ways |
Fingerprint/Card/Mechanical Key/APP |
| Error rejection rate |
<0.01% |
| Applicable door thickness |
35 - 75mm |
| Fingerprint capacity |
100 |
| Password groups |
100 |
| Working temperature |
-20ºC - 70ºC |
Advantages:
1. Multiple Unlocking Methods:** Supports five convenient unlocking options-mobile app, fingerprint, passcode, smart card, or mechanical key-providing flexibility and ease for everyday use.
2. App-Based Unlocking:** Unlock your door remotely using the Tuya/TTLock app. The app also allows you to manage user access, view entry logs, adjust settings, and more-all with a high level of security.
3. Fingerprint Recognition:** Equipped with a responsive semiconductor fingerprint sensor that offers fast recognition and a low error rate, making it ideal for all household members, including the elderly.
4. Auto-Lock Feature:** The door automatically locks 5 seconds after being opened. This function is enabled by default but can be turned off via the app if preferred.
5. Emergency Power Supply:** Powered by 4 AAA batteries (not included), the lock also includes a Type-C port for emergency charging when the batteries run out.
Detailed Photos







FAQ
Q1: Is a smart lock as secure as a traditional lock?
A: Yes, and often more secure. Our smart lock is built with a Grade-Anitized zinc alloy body and features a reinforced lock cylinder, providing robust physical security. Digitally, it uses military-grade encryption for all wireless communication (like Bluetooth or Wi-Fi), making it virtually impossible to hack. Plus, features like temporary passcodes and entry logs give you **more control and awareness than a traditional key ever could.
Q2: What happens if the battery dies? Will I be locked out?
A: With 4*AAA batteries, you can lock/unlock your door up to 8000 times! With ten opening/closing operations per day, that means you can expect 1 year of runtime from each battery set.
If your lock runs out of power, don't fret! You can use a power bank to unlock your door until you can replace your batteries.(Note: The lock does not support the charging function)
Q3: How easy is the installation? Will it fit my door?
A: Our lock is designed for a straightforward DIY installation, fitting standard EU residential doors We provide a full installation template, step-by-step video guide, and all necessary hardware. If your door has non-standard measurements, a professional locksmith can easily install it using the provided adapters.
Q4: Can I still give access to family, friends, or service people without a physical key?
A: Absolutely. This is one of the biggest advantages. You can grant secure, customized access in several ways:
* Create permanent or **recurring passcodes** for family.
* Generate " one-time passcodes" for cleaners, dog walkers, or guests.
* Remotely **unlock the door via the app** for anyone you choose.
* Program permanent **fingerprint or smart card access**.
Q5: How reliable is the fingerprint sensor? Will it work for children or the elderly?
A. Our high-precision semiconductor fingerprint sensor is exceptionally reliable. It has a fast recognition speed (under 0.5 seconds) and an extremely low false rejection rate. It works well for users of all ages, though we recommend registering multiple fingerprints for each user (e.g., different angles of the same finger) for optimal performance, especially for children whose fingerprints are still developing.
Q6: Can I control and monitor the lock when I'm not home?
A:Yes, if you connect the lock to Wi-Fi (either directly or via a compatible hub). This allows you to:
* Lock or unlock your door **remotely** from anywhere.
* Receive **real-time notifications** for all lock/unlock events.
* Check the * unlock record** to see who came and went, and when.
* Manage all user access instantly from your phone.
Q7: What if I lose my phone or the Wi-Fi/Bluetooth is down?
A: Your access is never tied to a single method. You can still enter using:
* Your registered fingerprint.
* Your permanent .passcode.
* The included smart card or mechanical key.
The core smart functions operate via Bluetooth between your phone and the lock, so they do not require an internet connection to work at the door.
Q8: Which smart home systems does this lock work with?
A: Our lock is compatible with major platforms like **Google Home, Amazon Alexa, and Apple HomeKit (via hub)**. This allows for voice control (e.g., "Alexa, lock the front door") and integration into routines (e.g., locking all doors when you say "Goodnight"). Please check the product specifications for the confirmed compatibility list.